/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-tertiary: #141414;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --accent-primary: #00d4ff;
    --accent-primary-hover: #00b8e6;
    --accent-secondary: #666666;
    --border-color: #1a1a1a;
    --error-color: #ff4444;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.7);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.8);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 600px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

/* Header Styles */
.header {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    width: 100%;
}

.logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding: 1rem 0 0.25rem 0;
}

.logo {
    max-width: 200px;
    height: auto;
    opacity: 0.8;
    filter: drop-shadow(var(--shadow-md));
}

.title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin: 0;
}

/* Main Content */
.main-content {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

/* Error Message */
.error-message {
    background: rgba(255, 68, 68, 0.1);
    border: 1px solid var(--error-color);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    color: var(--error-color);
    width: 100%;
    text-align: center;
}

/* Login Section */
.login-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    width: 100%;
    padding: 2rem;
    background: var(--bg-tertiary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.login-description {
    color: var(--text-secondary);
    font-size: 1rem;
    text-align: center;
    margin: 0;
}

/* Welcome Section */
.welcome-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    width: 100%;
    padding: 2rem;
    background: var(--bg-tertiary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.welcome-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
    text-align: center;
}

.user-email {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 10px;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
    min-width: 160px;
}

.btn-primary {
    background: var(--accent-primary);
    color: var(--bg-primary);
    box-shadow: var(--shadow-md);
    font-weight: 600;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: var(--accent-primary-hover);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-secondary);
}

/* Footer */
.footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0;
    padding-top: 0;
}

/* Applications Section */
.applications-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
}

.application-card {
    padding: 1.5rem 2rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: all 0.2s ease;
    cursor: pointer;
}

.application-card:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.application-card:active {
    transform: translateY(0);
    box-shadow: var(--shadow-md);
}

.application-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    text-align: center;
}

.logout-section {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}

/* Responsive Design */
@media (max-width: 640px) {
    .title {
        font-size: 2.25rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .logo {
        max-width: 150px;
    }

    .login-section,
    .welcome-section {
        padding: 1.5rem;
    }

    .application-card {
        padding: 1.25rem 1.5rem;
    }

    .btn {
        width: 100%;
    }
}